12507647 has 4 divisors (see below), whose sum is σ = 12532176. Its totient is φ = 12483120.

The previous prime is 12507619. The next prime is 12507667. The reversal of 12507647 is 74670521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74670521 = 2269 ⋅32909.

It is a cyclic number.

It is not a de Polignac number, because 12507647 - 2¹⁸ = 12245503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12507617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11483 + ... + 12524.

It is an arithmetic number, because the mean of its divisors is an integer number (3133044).

Almost surely, 2^12507647 is an apocalyptic number.

12507647 is a deficient number, since it is larger than the sum of its proper divisors (24529).

12507647 is an equidigital number, since it uses as much as digits as its factorization.

12507647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24528.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 12507647 is about 3536.6151896976. The cubic root of 12507647 is about 232.1267576730.

The spelling of 12507647 in words is "twelve million, five hundred seven thousand, six hundred forty-seven".